Magnavox 20MC4304/17 Service Manual Download Page 66

Page: 66 / 117

1-11-23

Sub 2/2 Schematic Diagram < TV/VCR Section >

T1102SCSUB2

PLAY mode
REC mode
DVD mode

Voltage indications for PLAY, REC and DVD modes
on the Schematic Diagrams are as shown below:

5.0
(2.5)

5.0

The same voltage for
PLAY, REC & DVD modes.

Indicates that the voltage
is not consistent here.

Summary of Contents for 20MC4304/17

Page 1: ...ds All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying or otherwise without the prior permission of Philips EN 3139 785 31060 CLASS 1 LASER PRODUCT KLASSE 1 LASER PRODUKT KLASS 1 LASER APPARAT CLASSE 1 PRODUIT LASER Service Manual Service Service Service This service manual is f...

Page 2: ... 9 1 BLOCK DIAGRAMS 1 10 1 SCHEMATIC DIAGRAMS CBA S AND TEST POINTS 1 11 1 WAVEFORMS 1 12 1 WIRING DIAGRAM TV VCR SECTION 1 13 1 WIRING DIAGRAM DVD SECTION 1 13 2 SYSTEM CONTROL TIMING CHARTS 1 14 1 IC PIN FUNCTION DESCRIPTIONS 1 15 1 LEAD IDENTIFICATIONS 1 16 1 ELECTRICAL PARTS LIST 1 17 1 EXPLODED VIEWS 1 18 1 MECHANICAL PARTS LIST 1 19 1 Sec 1 Main Section I Adjustment Procedures I Schematic Di...

Page 3: ...hen the diode is turned on Do not look directly at the laser beam CAUTION Use of controls and adjustments or doing procedures other than those specified herein may result in hazardous radiation exposure Location Top of DVD mechanism Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin Drive Mechanism Assembly Laser Beam Radiation Laser Pickup Turnta...

Page 4: ...screw and if applicable to the coaxial connector If the measured resistance is less than 1 0 megohm or greater than 5 2 megohm an abnormality exists that must be corrected before the instrument is returned to the customer Repeat this test with the instrument AC switch in the off position d Leakage Current Hot Check With the instrument completely reassembled plug the AC line cord directly into a 12...

Page 5: ...C voltmeter measure between the chassis and a known earth ground If a voltage reading in excess of 1 0V is obtained remove and reinsert the AC power plug in the opposite polarity and again measure the voltage potential between the chassis and a known earth ground b Some TV receiver chassis normally have 85V AC RMS between chassis and earth ground regardless of the AC plug polarity This chassis can...

Page 6: ...t contact sharp edged or pointed parts H When a power cord has been replaced check that 5 6 kg of force in any direction will not loosen it I Also check areas surrounding repaired locations J Be careful that foreign objects screws solder droplets etc do not remain inside the set K Crimp type wire connector When replacing the power transformer in sets where the connections between the power cord an...

Page 7: ...d plug prongs and externally exposed accessible parts RF terminals antenna terminals video and audio input and output terminals microphone jacks earphone jacks etc Measuring Method Power ON Insert load Z between B earth ground power cord plug prongs and exposed accessible parts Use an AC voltmeter to measure across both terminals of load Z See Fig 2 and following table Table 2 Leakage current rati...

Page 8: ...ixing solder alloys leaded lead free So best to always use SAC305 and the higher temperatures belong to this Due to lead free technology some rules have to be respected by the workshop during a repair Use only lead free solder alloy Philips SAC305 with order code 0622 149 00106 If lead free solder paste is required please contact the manufacturer of your solder equipment In general use of solder p...

Page 9: ...ice ce Philips com you find more information to BGA de soldering baking instructions Heating profiles of BGAs and other ICs used in Philips sets You will find this and more technical information within the magazine chapter workshop news For additional questions please contact your local repair helpdesk How to Remove Install Flat Pack IC 1 Removal With Hot Air Flat Pack IC Desoldering Machine 1 Pre...

Page 10: ...l pins of the flat pack IC you can remove it easily Fig S 1 3 2 Affix the wire to a workbench or solid mounting point as shown in Fig S 1 5 3 While heating the pins using a fine tip soldering iron or hot air blower pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig S 1 5 4 Bottom of the flat pack IC is fixed with glue to the CBA when removing ...

Page 11: ...cur due to a potential difference caused by electrostatic charge during unpacking or repair work 1 Ground for Human Body Be sure to wear a grounding band 1 MΩ that is properly grounded to remove any static electricity that may be charged on the body 2 Ground for Workbench Be sure to place a conductive sheet or copper plate with proper grounding 1 MΩ on the workbench or other surface where the semi...

Page 12: ...en you want to record during the Service mode press the Rec button while depressing SW1211 REC SAFETY SW on the Main CBA Key Adjustment Mode PICTURE Picture adjustment mode Press the PICTURE button to change from BRT Bright CNT Contrast COL Color TNT Tint V TNT V Tint and SHP Sharpness Press CH o p buttons to display Initial Value Marked items are not necessary to adjust normally 0 C Trap adjustme...

Page 13: ...1 5 1 T1102IB OPERATING CONTROLS AND FUNCTIONS ...

Page 14: ...1 5 2 T1102IB ...

Page 15: ...1 5 3 T1102IB ...

Page 16: ...1 5 4 T1102IB ...

Page 17: ...unclamped or desoldered P Spring L Locking Tab S Screw CN Connector Unhook Unlock Release Unplug or Desolder e g 2 S 2 two Screws S 2 2 L 2 two Locking Tabs L 2 5 Refer to the following Reference Notes in the Table Step Loc No Part Removal Fig No Remove Unhook Unlock Release Unplug Unclamp Desolder Note 1 Rear Cabinet D1 4 S 1 S 2 2 S 3 2 Tray Chassis Unit D2 D3 D5 Anode Cap CN2501 CRT CBA CN1601 ...

Page 18: ... body etc during unpacking or repair work To avoid damage of pickup follow next procedures 1 Disconnect Connector CN301 on the DVD Main CBA Unit 2 Short the three short lands of FPC cable with solder before removing the FFC cable CN201 from it If you disconnect the FFC cable CN201 the laser diode of pickup will be destroyed Fig D4 3 Remove four screws S 5 and Wire Holder C and remove DVD Mechanism...

Page 19: ...VD Main CBA Unit Loader Cover Loader PCB Holder 4 DVD Mechanism 2 Tray Chassis Unit S 6 S 5 S 5 S 9 S 9 Top Shield S 10 S 10 S 10 8 Deck Assembly S 12 S 11 S 13 S 13 S 13 9 Main CBA S 8 S 7 S 7 S 7 S 7 6 Sub CBA 7 Function CBA Fig D2 ...

Page 20: ...1 6 4 T1102DC 3 CRT Anode Cap CRT CBA S 4 S 4 S 4 S 4 Fig D3 A DVD Mechanism Fig D4 View for A Short the three short lands by soldering Either of two places Connector ...

Page 21: ...LY CAPSTAN MOTOR DECK ASSEMBLY TUNER MAIN CBA SUB CBA CRT CBA TO SPEAKER TO SPEAKER CL2504A SCREEN CL2501B CN2501 FOCUS CN1802 CL1201 CN1602 CN1301 CN1302 CN1803 CL1402 CN1601 CL1401 CL403 CL2501A CN2571 CN1 CN2 CN2502 CN2503 CN2401 CN2801 AC CORD FUNCTION CBA Fig D5 CN201 CN301 CN2A CN1A ...

Page 22: ... and 17 of the microprocessor with a jumper wire How to Set up the Service mode Service mode 1 Use the service remote control unit 2 Turn the power on Use main power on the TV unit 3 To enter the TV mode press CH o p buttons on the TV unit 4 Press DISC MENU button on the service remote control unit Version of micro computer will display on the CRT Ex 057 001 X Ray Protection Test X Ray protection ...

Page 23: ...E button on the service remote control unit Then select V TINT V TNT display 2 Press CH o p buttons on the service remote control unit so that the value of V TINT V TNT becomes 56 SHARP SHP 1 Press PICTURE button on the service remote control unit Then select SHARP SHP display 2 Press CH o p buttons on the service remote control unit so that the value of SHARP SHP becomes 46 Note BRIGHT data value...

Page 24: ... 3 Y DL Time TV Adjustment Select 2 by pressing CH o p buttons on the service remote control Y DL Time EXT Adjustment Select 3 by pressing CH o p buttons on the service remote control Y SW LPF Adjustment Select 0 by pressing CH o p buttons on the service remote control Black Stretch Off Adjustment Select OFF by pressing CH o p buttons on the service remote control Black Stretch CONT Adjustment Sel...

Page 25: ...o show DVD SHP on the display 3 CD VOL Adjustment Select 7 by pressing CH o p buttons on the service remote control DVD BRT Adjustment Select 14 by pressing CH o p buttons on the service remote control DVD CNT Adjustment Select 0 by pressing CH o p buttons on the service remote control DVD SHARP Adjustment Select 3 by pressing CH o p buttons on the service remote control Fig 4 VOL button CD VOL Ad...

Page 26: ...d allow the unit to operate for 20 minutes before starting the alignment 2 Input the Black raster signal from RF input 3 Enter the Service mode See page 1 7 1 4 Press the VOL p button Press VOL p button then display will change C D 7F and Initial Setting 5 Choose CUT OFF DRIVE mode then press 1 button This adjustment mode is CUT OFF R 6 Increase the screen control so that the horizontal line just ...

Page 27: ...ing the optical receptor to the center on the tube surface CRT 5 Enter the Service mode Press VOL p button on the service remote control unit and select C D mode Display changes C D 7F and Initial Setting cyclically when VOL p button is pressed 6 Press 4 button on the service remote control unit for Red adjustment Press 5 button on the service remote control unit for Blue adjustment 7 In each colo...

Page 28: ...30 minutes 2 Face the unit to the East and degauss the CRT using a degaussing coil 3 Input the monoscope pattern 4 Adjust the Focus Control on the FBT to obtain a clear picture 12 H Position Adjustment Purpose To obtain correct horizontal position of screen image Symptom of Misadjustment H position may not be properly displayed 1 Enter the Service mode See page 1 7 1 Press 8 button on the remote c...

Page 29: ...s CH o p buttons on the remote control unit so that the monoscope pattern is 90 5 of display size and the circle is round 15 Head Switching Position Adjustment Purpose Determine the Head Switching Position during Playback Symptom of Misadjustment May cause Head Switching Noise or Vertical Jitter in the picture Note Unit reads Head Switching Position automatically and displays it on the screen Uppe...

Page 30: ...djustment Purpose To obtain proper convergence of red green and blue beams Symptom of Misadjustment If Convergence Adjustment is incorrect the edge of white letters may have color edges 1 Set the unit to the AUX mode which is located before CH2 then input a dot or crosshatch pattern 2 Loosen the Ring Lock and align red with blue dots or crosshatch at the center of the screen by rotating RB C P Mag...

Page 31: ...1 7 10 T1102EA Adjustment Points and Test Points Sub CBA Main CBA VR1601 B ADJ TP1301 B OUT R2583 H ADJ UPPER FOCUS VR LOWER SCREEN VR TP2501 B Adjustment ...

Page 32: ... unit 2 Turn the power on Use main power on the TV unit 3 Press DISC MENU button on the service remote control unit to enter the Service mode Refer to How to Set up the Service mode on page 1 7 1 4 Press VOL p button on the service remote control unit twice and confirm that OSD indication is 7F FF If needed set it to become 7F FF by pressing CH o p buttons on the service remote control unit 5 Conf...

Page 33: ... unit to go to TV mode or press STANDBY ON button on the unit to turn the power off 8 Press SELECT button on the remote control unit to put the TV DVD VCR into DVD mode again 9 Press 1 2 3 4 and DISPLAY buttons on the remote control unit in that order Fig d appears on the screen 10 Press CLEAR button on the remote control unit Fig e appears on the screen When OK appears on the screen the factory d...

Page 34: ... Hi Fi H SW 19 26 2 21 YCA SDA YCA CS DVD AUDIO MUTE 42 5 KEY SWITCH SW1201 SW1203 SW1206 SW1210 3 3 KEY1 CN2401 CN2503 CN1803 KEY SWITCH SW2401 SW2408 14 25 8 SDATA 8 12 SDATA TO DVD SYSTEM CONTROL SERVO BLOCK DIAGRAM DVD SECTION CN1A CN1 6 CN1301 6 SCLK 7 CS 9 DVD REMOTE M 1 M 12V 5 C CONT 6 FG GND 7 LD CONT CAPSTAN MOTOR CAPSTAN MOTOR P ON 5V 3 D L 15V M 12V 10 M GND 11 D L 12V 9 D PFG 12 D L 1...

Page 35: ...X1401 3 58MHz VIDEO L 2 HEAD VIDEO R 2 HEAD JM1403 ENV BUFFER DV SYNC DV SYNC 53 24 YCA SCL VIDEO TU VIDEO EXT V IN 14 36 37 39 34 Q1402 BUFFER 58 60 SP EP 54 YCA SDA 55 YCA CS SERIAL I F VCA CLAMP 69 70 49 50 SP HEAD AMP EP HEAD AMP 72 73 74 65 66 67 V ENV ROTA ROTA RF SW WF5 WF4 WF1 WF6 WF2 TO SYSTEM CONTROL SERVO BLOCK DIAGRAM SMD NOTE FOR WIRE CONNECTORS 1 PREFIX SYMBOL CN MEANS CONNECTOR CAN ...

Page 36: ...UTE 15 15 DVD AUDIO R 14 7 6 14 DVD AUDIO L TO Hi Fi AUDIO BLOCK DIAGRAM 16 5 9 16 DVD AUDIO MUTE AUDIO OUT R AUDIO OUT L N A IN N A OUT JK2601 TP1002 WF19 WF20 TP1001 DVD AUDIO L WF8 WF7 PB AUDIO SIGNAL DVD AUDIO SIGNAL REC AUDIO SIGNAL DATA AUDIO SIGNAL DIGITAL A OUT COXIAL DVD AUDIO R TO SYSTEM CONTROL SERVO BLOCK DIAGRAM TO SYSTEM CONTROL SERVO BLOCK DIAGRAM 2 11 IC1803 AUDIO AMP 7 VOLUME 14 1...

Page 37: ...ASSEMBLY MAIN CBA CL1401 IC1701 MTS SAP Hi Fi AUDIO PROCESS Hi Fi HEAD AMP PILOT CANCEL TO AUDIO BLOCK DIAGRAM 62 63 JK1702 AUDIO L IN JK1703 AUDIO R IN SIF TO TV PROCESS BLOCK DIAGRAM Q1701 TP1701 TP1702 SDA Hi Fi L Hi Fi R PB AUDIO SIGNAL REC AUDIO SIGNAL Mode SP REC TO SYSTEM CONTROL SERVO BLOCK DIAGRAM TO SYSTEM CONTROL SERVO BLOCK DIAGRAM TO SYSTEM CONTROL SERVO BLOCK DIAGRAM Hi Fi A R 3 Hi F...

Page 38: ...X BLIGHT DRIVE AMP HV BLANKING TUNER TUNER FILTER TUNING VXCO CF1032 IC1001 IF SIGNAL PROCESS VIF AMP VIDEO DET VCO 4 5MHz FILTER IF AGC DET SIF AMP RF AGC AMP AFT EQ AMP 16 11 13 17 4 7 8 14 C SYNC LINE DVD VCR VCR LINE DVD RED CN1602 11 H DRIVE 12 V DRIVE 10 AFC CN1301 19 V RAMP FB 17 ACL CN1301 CN2503 3 DVD C 4 3 4 CN2 1 3 DVD Y 28 Q1403 BUFFER TP1301 BLUE GREEN RED TP1302 TP1303 TP1672 DVD Y R...

Page 39: ...OCK DIAGRAM CN1602 CN2504 CL2504B JUNCTION CBA 4 3 2 RED 2 GREEN 3 BLUE 4 TO TV PROCESS BLOCK DIAGRAM CN1302 TO TV PROCESS BLOCK DIAGRAM CN1301 TO TV PROCESS BLOCK DIAGRAM CN1602 TP2503 H DRIVE WF9 REC VIDEO SIGNAL PB VIDEO SIGNAL DVD VIDEO SIGNAL Mode SP REC B 1 B 2 26V 8 V DRIVE 10 H DRIVE 12 AFC 11 ACL 19 V RAMP FB 17 NOTE FOR WIRE CONNECTORS 1 PREFIX SYMBOL CN MEANS CONNECTOR CAN DISCONNECT AN...

Page 40: ...D ON 5V 4 4 DVD ON 3 3V 3 3 EV 3 3V 9 9 POWCON DVD MAIN CBA UNIT EV 9V DVD ON 5V DVD ON 3 3V EV 1 2V EV 3 3V PWRCON TO DVD SYSTEM CONTROL SERVO BLOCK DIAGRAM DVD SECTION 4A 125V Q1682 SW 5V P ON 5V 4 IC1682 5V REG 5 7V CTRL TO TV PROCESS BLOCK DIAGRAM CN1A NOTE FOR WIRE CONNECTORS 1 PREFIX SYMBOL CN MEANS CONNECTOR CAN DISCONNECT AND RECONNECT 2 PREFIX SYMBOL CL MEANS WIRE SOLDER HOLES OF THE PCB ...

Page 41: ...DAC MC 86 ADAC ML ADAC MC ADAC ML PCM SCLK 88 AUDIO MUTE ADAC MD AUDIO MUTE 163 PCM SCLK TRAY IN 3 SP 4 SP 5 TRAY IN 6 GND 7 SL 8 SL VREF RESET TO SYSTEM CONTROL SERVO BLOCK DIAGRAM TC VCR SECTION CN1 73 RESET IC462 1 3 3 3V 15 16 14 13 12 11 17 18 23 6 4 5 3 1 2 25 24 27 26 81 SL AMP 143 SP ROT 3 3V 146 FD OFST 139 TD OFST SCLK RESET IC461 2 1 PWRCON PWRCON 70 IC202 OP AMP 1 2 6 7 5 3 13 14 12 Q0...

Page 42: ...ROM SERIAL D A GENERAL I O INTERRUPT CONTROLLER TIMER WATCH DOG TIMER REMOTE CONTROL 32BIT CPU STREAM I F EXTERNAL MEMORY I F SDRAM ECC UMAC 114 115 116 117 132 131 134 133 129 130 126 124 125 123 83 DEBUG BCU INST RAM DATA RAM D A TO TV PROCESS BLOCK DIAGRAM TV VCR SECTION CN2 158 Y C CN2A TO DVD AUDIO BLOCK DIAGRAM 177 SPDIF 170 PCM BCK 171 PCM DATA 169 PCM LRCLK 23 51 SDRAM DATA 0 15 SDRAM ADDR...

Page 43: ...A MODULATOR DAC LPF AMP L CH R CH LPF AMP DAC PCM BCK SPDIF PCM DATA PCM LRCLK ADAC MD ADAC MC ADAC ML PCM SCLK DVD MAIN CBA UNIT AUDIO MUTE TO AUDIO BLOCK DIAGRAM TV VCR SECTION CN2 DATA AUDIO SIGNAL DVD AUDIO SIGNAL 9 SPDIF 6 DVD AUDIO L 7 DVD AUDIO R 5 DVD AUDIO MUTE SYSTEM CLOCK MANAGER ZERO DETECT 16 Q004 BUFFER Q005 AMP SMD NOTE FOR WIRE CONNECTORS 1 PREFIX SYMBOL CN MEANS CONNECTOR CAN DISC...

Page 44: ...r shown on these draw ings for ordering The correct part number is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 To maintain original function and reliability of repaired units use only original replacement parts which are listed with their part numbers in the parts list section of the service manual 3 How to read converged lines Examples 1 1...

Page 45: ... 1 C1226 D 2 Q1205 A 1 R1243 D 2 R1298 B 3 C1233 D 1 Q1206 D 3 R1244 D 2 R1299 D 2 C1234 D 2 R1245 D 2 C1235 D 3 R1200 D 3 R1246 D 2 SW1201 A 3 C1239 C 4 R1201 A 4 R1247 D 2 SW1202 A 4 C1240 C 4 R1202 B 4 R1248 D 2 SW1203 A 4 C1241 C 4 R1203 B 4 R1249 D 2 SW1206 A 4 C1243 B 4 R1204 B 4 R1250 D 2 SW1207 A 4 C1244 B 4 R1205 B 4 R1251 D 2 SW1208 A 4 C1245 C 4 R1206 B 4 R1252 D 2 SW1209 A 4 C1246 A 4 ...

Page 46: ...ion T1102SCM1 PLAY mode REC mode DVD mode Voltage indications for PLAY REC and DVD modes on the Schematic Diagrams are as shown below 1 2 3 5 0 2 5 0 5 0 The same voltage for PLAY REC DVD modes Indicates that the voltage is not consistent here SMD ...

Page 47: ...V VCR Section PLAY mode REC mode DVD mode Voltage indications for PLAY REC and DVD modes on the Schematic Diagrams are as shown below 1 2 3 5 0 2 5 0 5 0 The same voltage for PLAY REC DVD modes Indicates that the voltage is not consistent here SMD ...

Page 48: ...1872 H 1 R1431 I 4 C1424 K 3 C1467 I 2 Q1873 G 1 R1432 H 3 C1425 K 3 C1468 I 2 Q1874 G 1 R1433 K 4 C1426 K 3 C1469 I 2 Q1875 H 1 R1436 H 2 C1427 J 4 C1870 H 2 R1871 H 1 C1428 J 4 C1871 H 2 R1405 I 4 R1872 H 2 C1429 J 4 C1872 G 2 R1406 I 4 R1873 H 2 C1430 J 4 C1873 G 2 R1407 I 4 R1874 H 2 C1431 J 4 R1408 I 4 R1875 H 1 C1432 K 3 CL403 G 1 R1409 J 1 R1876 H 1 C1433 J 4 CL1401 G 3 R1410 J 2 R1877 G 2 ...

Page 49: ...C1394 O 1 R1038 P 3 R1355 N 2 C1040 Q 2 R1039 P 3 R1356 N 2 C1041 Q 1 CN1302 R 4 R1040 Q 2 R1701 M 3 C1043 Q 2 R1041 P 3 R1702 M 3 C1044 Q 2 D1302 P 4 R1042 P 3 R1703 N 3 C1045 Q 2 D1303 P 4 R1043 P 3 C1046 Q 3 D1304 P 4 R1049 P 3 X1301 N 3 C1049 Q 3 D1305 O 1 R1050 P 3 C1050 Q 2 D1311 M 4 R1301 P 4 CF1032 P 3 C1301 O 1 D1318 M 4 R1303 P 4 JK1701 M 3 C1309 N 3 D1350 Q 3 R1305 P 4 SF1001 P 1 C1310 ...

Page 50: ...V VCR Section PLAY mode REC mode DVD mode Voltage indications for PLAY REC and DVD modes on the Schematic Diagrams are as shown below 1 2 3 5 0 2 5 0 5 0 The same voltage for PLAY REC DVD modes Indicates that the voltage is not consistent here SMD ...

Page 51: ...V VCR Section PLAY mode REC mode DVD mode Voltage indications for PLAY REC and DVD modes on the Schematic Diagrams are as shown below 1 2 3 5 0 2 5 0 5 0 The same voltage for PLAY REC DVD modes Indicates that the voltage is not consistent here SMD ...

Page 52: ...U 4 C1753 U 2 C1777 U 4 L1751 V 3 R1770 V 3 C1754 U 2 C1778 T 4 L1752 W 4 R1771 V 3 C1755 U 2 C1779 T 4 R1772 W 3 C1756 U 1 C1780 T 4 Q1701 W 2 R1773 W 2 C1757 V 1 C1781 T 4 R1774 W 2 C1758 V 2 C1782 T 3 R1731 W 1 R1780 U 1 C1759 V 2 C1783 T 3 R1732 V 1 R1781 U 1 C1760 V 2 C1784 T 3 R1734 W 1 C1761 V 2 C1786 T 3 R1735 V 1 JK1702 W 1 C1762 V 2 C1787 T 3 R1750 T 2 JK1703 W 1 C1763 V 3 C1788 T 3 R175...

Page 53: ... 1 C1118 Z 2 R1813 Z 2 C1801 Y 4 IC1803 Y 3 R1814 Z 3 C1802 AA 1 R1815 Z 2 C1807 Y 4 R1110 Z 2 R1816 Z 3 C1810 Z 2 R1111 Z 2 C1811 Y 3 R1112 AA 2 JK1801 X 4 C1812 Z 3 R1113 Z 2 C1813 Z 3 R1159 AA 1 TP1001 Z 2 C1814 Z 3 R1160 AA 1 TP1002 Z 2 C1815 Z 3 R1163 Z 2 TP1671 BB 3 C1818 Z 2 R1164 Z 2 TP1672 BB 3 C1819 Z 2 R1673 BB 2 TP1673 BB 3 C1821 Z 1 R1674 BB 2 R1675 BB 3 CN1301 BB 3 R1676 BB 3 RESISTO...

Page 54: ...V VCR Section PLAY mode REC mode DVD mode Voltage indications for PLAY REC and DVD modes on the Schematic Diagrams are as shown below 1 2 3 5 0 2 5 0 5 0 The same voltage for PLAY REC DVD modes Indicates that the voltage is not consistent here SMD ...

Page 55: ...même type de 4A 125V 4A 125V CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F1601 is blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail VOLTAGE CHART Power off mode Ref No 1 4 IC16...

Page 56: ...26 FF 1 D1640 FF 3 R1608 DD 2 R1688 FF 2 C1630 EE 1 D1641 CC 2 R1609 FF 2 R1689 FF 2 C1633 GG 1 D1645 EE 2 R1610 DD 2 R1691 FF 3 C1642 FF 1 D1657 GG 1 R1613 DD 2 R1692 FF 3 C1643 EE 2 D1660 FF 2 R1614 DD 2 R1693 GG 3 C1650 EE 2 D1663 GG 1 R1616 EE 3 R1694 FF 2 C1661 GG 1 D1680 GG 3 R1617 EE 2 R1695 GG 3 C1671 EE 3 D1682 HH 1 R1618 FF 3 C1683 GG 1 D1683 HH 1 R1619 FF 3 BC1600 DD 3 C1685 FF 2 D1684 ...

Page 57: ... C1760 D 4 CN1802 B 1 D1692 E 2 R1032 F 1 C1249 A 3 C1443 C 4 C1761 D 4 CN1803 A 5 D1811 B 1 R1033 F 1 C1251 A 3 C1444 C 4 C1762 D 4 D1812 A 1 R1034 F 1 C1252 D 1 C1445 C 4 C1763 D 4 D1204 A 4 D1813 A 1 R1037 F 1 C1253 C 1 C1447 C 4 C1764 D 4 D1216 A 5 R1038 E 1 C1254 C 1 C1449 C 4 C1765 D 4 D1217 A 5 IC1001 F 1 R1039 E 1 RESISTORS DIODES CAPACITORS CAPACITORS CAPACITORS CAPACITORS ICS CONNECTORS ...

Page 58: ...s required For continued protection against risk of fire replace only with same type 4 A 125V fuse CAUTION ATTENTION Utiliser un fusible de rechange de même type de 4A 125V 4A 125V CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F1601 is blown check to see that all components in the power supply circuit are not defective before you connect th...

Page 59: ...ble isolation transformer is required NOTE The voltage for parts in hot circuit is measured using hot GND as a common terminal For continued protection against risk of fire replace only with same type 4 A 125V fuse CAUTION ATTENTION Utiliser un fusible de rechange de même type de 4A 125V 4A 125V CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse...

Page 60: ...B 1 C2506 B 1 L2501 B 2 R2513 C 1 C2508 B 1 R2514 B 1 C2509 C 2 Q2501 C 1 R2515 B 1 C2510 B 2 Q2502 B 1 R2516 B 2 Q2503 B 2 R2517 B 2 CL2501B B 2 R2518 B 2 CL2504A B 2 R2502 C 2 R2519 C 1 CN2501 C 1 R2503 C 2 R2520 C 1 R2507 B 1 R2521 C 2 D2501 B 1 R2508 B 1 R2523 C 2 D2502 B 1 R2509 B 1 D2503 B 1 R2510 C 1 JK2501 C 2 RESISTORS MISCELLANEOUS COIL TRANSISTORS RESISTORS CONNECTORS CAPACITORS DIODES ...

Page 61: ... C2504 A 2 D2501 A 2 R2502 A 1 R2515 A 1 C2505 A 1 D2502 A 2 R2503 A 1 R2516 A 1 C2506 A 1 D2503 A 1 R2507 A 2 R2517 A 1 C2508 A 2 D2505 A 1 R2508 A 1 R2518 A 1 C2509 B 1 R2509 A 1 R2519 A 2 C2510 A 1 L2501 A 1 R2510 A 2 R2520 A 2 R2511 A 2 R2521 A 2 CL2501B B 1 Q2501 A 2 R2512 A 2 R2523 A 1 CL2504A A 2 Q2502 A 2 R2513 A 2 CN2501 B 1 Q2503 A 1 R2514 A 2 JK2501 A 1 MISCELLANEOUS RESISTORS CONNECTOR...

Page 62: ...om View Junction CBA Top View BT1100F01022 1 11 19 Ref No Position CN2401 D 1 CN2801 A 1 R2401 D 1 R2402 C 1 R2403 C 1 R2404 B 1 R2405 B 1 R2406 B 1 R2407 B 1 SW2401 D 1 SW2402 C 1 SW2403 C 1 SW2404 C 1 SW2405 B 1 SW2406 B 1 SW2407 B 1 SW2408 A 1 SWITCHES RESISTORS FUNCTION CBA PARTS LOCATION GUIDE CONNECTORS ...

Page 63: ...m TV VCR Section PLAY mode REC mode DVD mode Voltage indications for PLAY REC and DVD modes on the Schematic Diagrams are as shown below 1 2 3 5 0 2 5 0 5 0 The same voltage for PLAY REC DVD modes Indicates that the voltage is not consistent here ...

Page 64: ...R2598 D 2 C2574 D 2 R2563 B 2 R2599 C 2 C2577 B 1 IC2551 A 4 R2564 B 2 R3506 E 3 C2578 B 1 R2565 B 3 R3568 B 3 C2583 E 3 L2505 B 1 R2566 B 3 R3576 B 1 C2584 E 3 R2567 B 3 R3580 B 1 C2586 C 2 Q2571 D 1 R2568 B 3 C2588 C 2 Q2591 B 1 R2571 B 1 BC2501 C 1 C2590 B 2 Q2592 B 2 R2572 B 4 T2571 D 3 C2591 B 2 R2573 B 4 T2572 C 1 C2592 D 2 R2501 A 2 R2574 C 1 C2594 B 1 R2504 C 2 R2576 B 1 TP2501 B 1 C2595 D...

Page 65: ...9 K 2 D2661 H 2 R2638 J 2 R2684 H 1 C2630 K 1 D2662 H 2 R2646 H 1 R2685 H 1 C2645 I 2 R2647 I 2 R2686 H 1 C2647 I 2 IC2602 H 1 R2649 H 2 R2687 I 1 C2654 H 1 IC3603 H 1 R2650 H 2 R2688 H 1 C2670 K 2 IC3604 I 2 R2651 H 2 R2689 I 1 R2652 K 2 R2691 H 2 CN1 L 2 L2610 K 2 R2653 I 3 CN2 L 3 L2613 K 2 R2655 H 2 BC2602 K 2 CN2502 G 2 L2621 I 2 R2656 H 2 BC2603 K 2 CN2503 G 4 R2657 H 2 BC2604 K 2 Q2610 H 3 ...

Page 66: ...tion T1102SCSUB2 PLAY mode REC mode DVD mode Voltage indications for PLAY REC and DVD modes on the Schematic Diagrams are as shown below 1 2 3 5 0 2 5 0 5 0 The same voltage for PLAY REC DVD modes Indicates that the voltage is not consistent here ...

Page 67: ...6 B 2 R2577 D 2 R2652 B 3 C2578 D 2 CN2 B 3 D2662 B 4 R2541 A 1 R2580 D 2 R2653 B 4 BC2501 B 1 C2583 A 2 CN2502 A 4 R2542 A 1 R2581 D 2 R2655 A 4 BC2602 B 3 C2584 A 2 CN2503 B 4 IC2551 C 2 R2543 A 1 R2583 A 2 R2656 B 4 BC2603 B 4 C2586 A 2 CN2571 C 1 IC2602 A 4 R2550 C 3 R2584 A 2 R2657 B 4 BC2604 C 4 C2588 B 2 IC3603 B 4 R2551 C 3 R2585 C 3 R2659 B 4 BC2605 C 4 C2590 B 2 D2552 C 3 IC3604 B 4 R255...

Page 68: ...R2583 H f0 Adjustment B TP2501 J2550 GND Sub CBA Top View TV VCR Section BT1100F01022 A 1 11 25 ...

Page 69: ...H DRIVE TP2503 WF11 PIN 5 CN2571 Q2571 Collector WF10 WF9 WF20 J2537 SPDIF 1 11 26 BT1100F01022 A Sub CBA Bottom View TV VCR Section ...

Page 70: ... PLAY mode STOP mode Voltage indications for PLAY and STOP modes on the Schematic Diagrams are as shown below 1 2 5 0 The same voltage for both PLAY STOP modes Indicates that the voltage is not consistent here SMD 1 NOTE Either IC461 or IC462 is used for DVD MAIN CBA UNIT ...

Page 71: ...Diagram DVD Section 3 5 0 2 5 PLAY mode STOP mode Voltage indications for PLAY and STOP modes on the Schematic Diagrams are as shown below 1 2 5 0 The same voltage for both PLAY STOP modes Indicates that the voltage is not consistent here SMD ...

Page 72: ...3 2 3 32 64 0 0 96 128 1 7 1 7 PIN NO PLAY STOP PIN NO PLAY STOP PIN NO PLAY STOP PIN NO PLAY STOP 129 2 3 2 3 161 3 4 3 4 193 225 3 4 3 4 130 2 3 2 3 162 0 0 194 226 131 2 3 2 3 163 1 8 1 8 195 227 132 2 4 2 3 164 0 0 196 3 4 3 4 228 133 2 4 2 4 165 1 7 1 8 197 229 0 0 134 2 4 2 4 166 1 7 1 7 198 230 135 2 3 2 3 167 3 4 3 4 199 231 3 4 3 4 136 2 3 2 3 168 0 0 200 232 1 3 1 6 137 2 3 2 3 169 1 8 1...

Page 73: ...Diagram DVD Section 3 5 0 2 5 PLAY mode STOP mode Voltage indications for PLAY and STOP modes on the Schematic Diagrams are as shown below 1 2 5 0 The same voltage for both PLAY STOP modes Indicates that the voltage is not consistent here SMD ...

Page 74: ...ontrast Approx 70 1DIV 2V 5ms TP1402 RF SW 1DIV 0 2V 0 1µs IC1401 Pin 49 1DIV 1V 10ms TP1202 CTL AMP OUT 1DIV 0 25V 20 µs IC1401 Pin 32 1DIV 0 5V 20 µs TP1401 V OUT Upper WF6 Lower WF1 1DIV 0 2V 2DIV 5V 5ms JM1403 ENV 1DIV 0 5V 0 5ms IC1401 PIN9 1DIV 0 5V 0 5ms IC1401 PIN10 1DIV 1V 20 µs TP2503 H DRIVE 1DIV 200V 20 µs Q2571 COLLECTOR 1DIV 10V 5ms CN2571 PIN 5 1DIV 20V 20µs Q2503 COLLECTOR 1DIV 20V...

Page 75: ...L CH SP GND 1 SP L 2 CN2801 CN2401 CN1803 CL2801 GND 1 1 GND 2 2 KEY1 3 3 SP L 4 4 NU 5 5 NU 6 6 GND 7 7 SPDIF 9 AUDIO 5V 8 DVD AUDIO R 7 DVD AUDIO L 6 DVD AUDIO MUTE 5 GND 4 DVD C 3 GND 2 DVD Y 1 EV 1 2V 1 EV 1 2V 2 EV 3 3V 3 DVD ON 3 3V 4 DVD ON 5V 5 EV 9V 6 GND 7 GND 8 GND 15 PWRCON 9 SCLK 10 CS 11 SDATA 12 P ON 5V 14 DVD REMOTE 13 GND 5 GND 5 1 1 B 2 2 B 3 3 GND 4 4 GND 5 5 GND 6 6 GND 7 7 DVD...

Page 76: ...IT CN201 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 TS TS FS CD LD FS GND DVD PD GND CD PD PD MONI DVD LD VREF E GND B P ON 5V CD DVD D A C F GND LD DETECTOR FS TS 7 9 11 2 3 6 5 4 TO CN2 DVD Y GND DVD C GND DVD AUDIO MUTE 1 2 3 4 5 CN2A DVD AUDIO L AUDIO 5V DVD AUDIO R SPDIF 6 7 8 9 SCLK CS SDATA DVD REMOTE 14 13 P ON 5V DVD MECHANISM NOTE FOR WIRE CONNECTORS 1 PREFIX SYMBOL CN MEANS CONN...

Page 77: ... 00 V 5 00 V CL 0 00 V 0 25 V 0 00 V SB 1 06 V 1 50 V 1 21 V TL 0 66 V 1 05 V 0 91 V FB 1 99 V 2 60 V 2 17 V SF 1 51 V 1 98 V 1 80 V SM 3 20 V 3 75 V 3 40 V AU 0 26 V 0 65 V 0 44 V AL 4 51 V 5 00 V 5 00 V SS 2 61 V 3 19 V 2 97 V RS Note Symbol Loading Status EJ Eject CL Eject REW Reel SB REW Reel Stop B TL Stop B Brake Cancel FB Brake Cancel FF REW SF FF REW Stop M FF REW SM Stop M FF REW Stop A A...

Page 78: ...IVE PB CTL 66 C F R STILL STILL FRAME ADVANCE ROLL COMPENSATION DRUM SERVO H A SW 15 ROTA AT The first rise of RF SW after a rise in F AD signal ST T1 BL H H T2 Z 1 SP MODE 1 2 3 4 Acceleration Detection Stop Detection Slow Tracking Value Reversal Limit Value ...

Page 79: ...E PB CTL 66 C F R STILL STILL FRAME ADVANCE ROLL COMPENSATION DRUM SERVO H A SW 15 ROTA AT The first rise of RF SW after a rise in F AD signal ST T1 BL H H T2 Z 2 LP EP MODE 1 2 3 4 Acceleration Detection Stop Detection Slow Tracking Value Reversal Limit Value ...

Page 80: ...2S LD REV LD REV LD FWD LD REV LD REV LD REV 0 2S 0 5S CL EJ SS SS AU AU TL Z ON ON PAUSE SLOW AU AL AL AU SF SM POWER OFF STOP PLAY RS FS STILL SLOW PLAY STOP PLAY SB TL SB FB SM SM SF AL AL RS AU AL SS AU AL SM 0 8S 0 2S 0 3S 1 0S 0 2S 0 5S 0 12S 1 2S 0 2S 1 2S 0 2S 20mS 0 4S 40mS 0 2S 0 2S Refer to STILL SLOW TIMING CHART 1 2 0 3S 0 2S 20mS 40mS 0 4S 0 2S 0 2S 0 2S 0 3S REC SFT SW POWER STOP B ...

Page 81: ...OP A LD REV FF LD REV LD REV LD FWD LD FWD LD FWD LD FWD LD FWD LD FWD LD FWD REC PAUSE REC REC REW LD REV LD REV LD REV LD REV LD REV LD REV LD REV PAUSE REC or PAUSE STOP EJECT STOP EJECT STOP EJECT 2 STOP A FF STOP A REW STOP A REC PAUSE PAUSE or REC STOP A EJECT STOP FF STOP REW STOP REC REC REC PAUSE STOP TL TL SM SM SF SF AL AL SM AL AL AL AU AU SM TL SB EJ RS RS SM SM SF FB SM AU AU SS SS S...

Page 82: ... Section Tray IN TL221 Sled Drive TP303 Disc Drive TP301 Focus Drive TP304 Tracking Drive TP302 0V 3 3V 0V 1 65V 0V 0V 0V 1 65V 1 65V 1 65V Tray Close Play Play Tray Open Tray Close Disc Rotation Play Disc Stop Tray Open ...

Page 83: ...Not Used 29 OUT D REC H Delayed Record Signal 30 NU Not Used 31 OUT P ON H Power On Signal at High 32 NU Not Used 33 IN REC SAFETY Record Protection Tab Detection 34 IN RESET System Reset Signal Reset L 35 IN XC IN Sub Clock 32 kHz 36 OUT XC OUT Sub Clock 32 kHz 37 TIMER 5V Vcc 38 IN X IN Main Clock Input 39 OUT X OUT Main Clock Output 40 GND GND 41 OUT SPOT KILL Counter measure for Spot 42 IN DVD...

Page 84: ...81 NU Not Used 82 OUT LD CONT Loading Motor Control Signal 83 NU Not Used 84 IN P DOWN Power Voltage Down Detector Signal 85 NU Not Used 86 NU Not Used 87 IN C FG Capstan Motor Rotation Detection Pulse 88 GND GND AMP 89 NU Not Used 90 IN D PFG Drum Motor Pulse Generator 91 NU Not Used 92 OUT AMP VREF IN Standard Voltage Input 93 C C 94 IN OUT CTL CTL 95 IN OUT CTL CTL 96 AMPC AMPC 97 OUT CTL AMP O...

Page 85: ... KTA1267 GR KTA1271 Y KTC3199 GR 2SA1015 GR TPE2 2SC1815 GR TPE2 2SC2120 O TPE2 2SC2120 Y TPE2 KTC3207 KA7805A KIA7805API UA7805CKC LTV 817C F PC817X6 2SD400 E F M3776AMCH BA2GP BR24C02F W BR24L02F WE2 CAT24WC02JI M24C02 WMN6 MID 32A22F PT204 6B 12 LA71205M MPB E LA72670BM MPB E LA72670M A MPB E KIA431 AT PQ070XF01SZH AN17812A Note A Anode K Cathode E Emitter C Collector B Base R Reference S Sourc...

Page 86: ...2W J 1K OHM R2583 9965 000 29029 METAL RESISTER 2W J 2 7 OHM R2583 9965 000 25512 METAL OXIDE FILM RES 2W J 2 7 O R2676 9965 000 29030 MET OXIDE RES 2W J 3 9 OHM R2676 9965 000 29031 MET OXIDE RES 2W J 3 9 OHM COILS L2505 9965 000 18121 CHOKE COIL 22UH K L2505 9965 000 29021 CHOKE COIL 22UH K L2505 9965 000 29022 FIXED INDUCTOR LGB0810TLF 220K L2613 4822 157 10326 10UH K 5FT L2613 4822 157 10646 1...

Page 87: ...OHM COILS L2501 9965 000 29037 INDUCTOR 180UH J 5FT L2501 9965 000 29038 INDUCTOR 180UH K DIODES D2501 4822 130 32778 1SS133 D2501 4822 130 30621 1N4148 D2502 4822 130 32778 1SS133 D2502 4822 130 30621 1N4148 D2503 4822 130 32778 1SS133 D2503 4822 130 30621 1N4148 TRANSISTORS Q2501 4822 130 60578 2SC2482 Q2501 9965 000 29039 TRANSISTOR KTC3207 Q2502 4822 130 60578 2SC2482 Q2502 9965 000 29039 TRAN...

Page 88: ...ITCH KSM0612B SW1208 9965 000 28960 TACT SWITCH TC 1104 H 5 0 SW1209 9965 000 13864 TACT SWITCH SKQSAB OR SW1209 9965 000 28959 TACT SWITCH KSM0612B SW1209 9965 000 28960 TACT SWITCH TC 1104 H 5 0 SW1210 9965 000 13864 TACT SWITCH SKQSAB OR SW1210 9965 000 28959 TACT SWITCH KSM0612B SW1210 9965 000 28960 TACT SWITCH TC 1104 H 5 0 SW1211 9965 000 15333 LEAF SWITCH LSA 1142 1AU SW1211 9965 000 12192...

Page 89: ... 150UH J 26T L1033 9965 000 28936 INDUCTOR 150UH K 26T L1202 9965 000 13857 INDUCTOR 0 10UH K 26T OR L1202 9965 000 28937 INDUCTOR 0 1UH M 26T L1211 9965 000 05627 CHOKE COIL 47UH K L1211 9965 000 05702 CHOKE COIL 47UH K L1211 9965 000 23990 CHOKE COIL 47UH K L1211 9965 000 28934 FIXED INDUCTOR LGB0810TLF 470K L1402 9965 000 13859 INDUCTOR 22UH J 26T OR L1402 4822 157 10331 22UH K 26T L1403 9965 0...

Page 90: ... 9965 000 11153 ZENER DIODE MTZJT 778 2B D1634 9965 000 28917 ZENER DIODE DZ 8 2BSBT265 D1635 4822 130 32778 1SS133 D1635 4822 130 30621 1N4148 D1636 4822 130 32778 1SS133 D1636 4822 130 30621 1N4148 D1640 9965 000 28923 DIODE 1ZC36 D1640 9965 000 28918 ZENER DIODE RD39FB D1641 9965 000 28919 ZENER DIODE MTZJT 7739B D1641 9965 000 28920 ZENER DIODE DZ 39BSBT265 D1645 4822 130 80601 ERB81 004 D1645...

Page 91: ...5 000 21660 TOSHIBA 2SC2120 Y Q1701 9965 000 05643 TRANSISTOR 2SC2785 F Q1701 9965 000 10994 2SC3199 GR KTC3199 GR Q1701 4822 130 41306 2SC1815GR Q1871 9965 000 05644 TRANSISTOR 2SA1175 F Q1871 4822 130 10462 KTA1267 GR Q1871 4822 130 11101 2SA1015GR Q1872 9965 000 28942 TRANSISTOR 2SC2120 O TPE2 Q1872 9965 000 21660 TOSHIBA 2SC2120 Y Q1873 4822 130 10097 2SC3331T Q1873 9965 000 05646 TRANSISTOR 2...

Page 92: ... A1 7 A1 9 A1 8 A1 5 A1 6 A1 4 A1 3 A1 1 A1 2 B7 B6 B6 TL1 5 TL4 TB23 2 TB18 A1X DG601 CLN551 CLN551 CLN551 Scotch Tape 880 CRT CBA Scotch Tape 880 V501 DVD Main CBA Unit 1B2 W1601 TL6 1B1 Main CBA Function CBA Sub CBA SP1801 CL1802 Junction CBA TL18 Sensor CBA SP801 CL2801 V501 1 L551 Details for L551 and surrounding parts SHINWHA TAPE SGT 730 WHITE SHINWHA TAPE SGT 730 BLACK V501 3 V501 2 See El...

Page 93: ...1 18 2 T1102PEX FRONT S4 S4 S1 X1 Tape X9 S4 X4 X2 1 X25 X3 S3 S6 S7 S2 Packing Tape X2 1 Packing ...

Page 94: ...01 9965 000 28876 CRT A51MAJ197X MECHANICAL PARTS 1B1 9965 000 28865 DECK ASSEMBLY CZD014 VM2466 1B2 9965 000 28866 DVD MECHA E6 N79U0JVM A1 1 9965 000 28858 FRONT CABINET TD900UA A1 1 9965 000 28859 FRONT CABINET TD900UA A1 2 9965 000 28860 CONTROL PLATE T1102UC A1 3 9965 000 28861 BADGE BRAND T7310UL MAGNAVOX A1 4 9965 000 28862 CASSETTE DOOR TD901UB A1 7 9965 000 28863 TRAY PANEL TD930JA A1X 99...

Page 95: ...ECHANICAL ALIGNMENT PROCEDURES 2 3 1 DISASSEMBLY ASSEMBLY PROCEDURES OF DECK MECHANISM 2 4 1 ALIGNMENT PROCEDURES OF MECHANISM 2 5 1 DECK EXPLODED VIEWS 2 6 1 DECK PARTS LIST 2 7 1 Sec 2 Deck Mechanism Section I Standard Maintenance I Mechanism Alignment Procedures I Disassembly Assembly of Mechanism I Deck Exploded Views I Deck Parts List ...

Page 96: ...2 After cleaning the parts do all DECK ADJUSTMENTS 3 For the reference numbers listed above refer to Deck Exploded Views Deck Periodic Service Schedule Ref No Part Name 1 000 h 2 000 h 3 000 h 4 000 h B2 Cylinder Assembly I I B3 Loading Motor Assembly I B8 Pulley Assembly I I B587 Tension Lever Assembly I I B31 ACE Head Assembly I B573 B574 Reel SP D2 Reel TU D2 I B37 Capstan Motor I I B52 Cap Bel...

Page 97: ...y hard material but since it is very thin avoid cleaning it vertically 2 Wait for the cleaned part to dry thoroughly before operating the unit 3 Do not reuse a stained head cleaning stick or a stained chamois cloth Cleaning of ACE Head Clean the head with a cotton swab Procedure 1 Remove the top cabinet 2 Dip the cotton swab in 90 ethyl alcohol and clean the ACE Head Be careful not to damage the u...

Page 98: ...Alignment Tape Back Tension Meter Made in USA Flat Screw Driver Purchase Locally Post Adjustment Screwdriver Metric Thickness Gauges Purchase Locally Lock Screw Driver Purchase Locally Head Cleaning Stick SERVICE FIXTURE AND TOOLS ...

Page 99: ...re that the Moving guide preparations are in the Eject Position 4 Turn the LDG Belt in the appropriate direction shown in Fig M1 until the Moving guide preparations come to the Eject Position Stop turning when the preparations begin clicking or can not be moved further However the tape will be left wound around the cylinder 5 Turn the LDG Belt in the appropriate direction continuously and the cass...

Page 100: ...there is no slack on the supply and take up side Guide Rollers Use a blank tape Adjust the height of the Guide Rollers Supply side and take up side Use a blank tape Page 2 3 3 Loading Use a blank tape Adjust the envelope Page 2 3 4 Check the envelope Adjust the Audio Section Azimuth Alignment Page 2 3 5 Check the audio output Check the following 1 X Value Page 2 3 3 2 Envelope Page 2 3 4 Adjust th...

Page 101: ...ilt Adj Screw of the ACE Head Fig M6 1 B X Value Alignment Purpose To obtain maximum PB FM envelope signal at the preset position of the Tracking Control Circuit align the Horizontal Position of the ACE Head Symptom of Misalignment If the Horizontal Position of the ACE Head is not properly aligned maximum PB FM envelope cannot be obtained at the preset position of the Tracking Control Circuit 1 Co...

Page 102: ...is adjustment turn the top of the Guide Roller with the Guide Roller Adj Screwdriver 3 If the envelope is as shown in Fig M7 adjust the height of Guide Roller 2 Refer to Fig M3 so that the waveform looks like the one shown in Fig M9 4 If the envelope is as shown in Fig M8 adjust the height of Guide Roller 3 Refer to Fig M3 so that the waveform looks like the one shown in Fig M9 5 When Guide Roller...

Page 103: ...the number of pushes to ensure preset position The number of pushes CHANNEL K button to achieve 1 2 level of envelope should match the number of pushes CHANNEL L button from center If required redo the X Value Alignment 1 E Checking and Alignment of Tape Path during reversing Purpose To make sure that the tape path is well stabilized during reversing Symptom of Misalignment If the tape path is uns...

Page 104: ...7 7 Cylinder Assembly T DM1 DM6 Desolder 3 S 2 8 8 Loading Motor Assembly T DM1 DM7 Desolder LDG Belt 2 S 3 9 9 ACE Head Assembly T DM1 DM7 S 4 10 2 Tape Guide Arm Assembly T DM1 DM8 1 P 2 11 10 C Door Opener T DM1 DM8 1 S 4A L 4 12 11 Pinch Arm B T DM1 DM8 1 DM8 2 P 3 13 12 Pinch Arm A Assembly T DM1 DM8 1 DM8 2 14 14 FE Head T DM1 DM9 S 5 15 15 Prism T DM1 DM9 S 6 16 2 15 Sensor Gear T DM1 DM9 1...

Page 105: ...Views for lubrication 32 25 Loading Arm SP Assembly B DM2 DM14 Refer to Alignment Sec Page 2 5 1 33 32 Loading Arm TU Assembly B DM2 DM14 Refer to Alignment Sec Page 2 5 1 34 2 25 M Brake TU Assembly T DM1 DM15 P 7 Brake Belt 35 2 25 M Brake SP Assembly T DM1 DM15 P 8 36 35 Tension Lever Assembly T DM1 DM15 37 36 T Lever Holder T DM15 L 12 38 34 Reel TU D2 T DM1 DM15 39 38 M Gear T DM1 DM15 40 36 ...

Page 106: ...2 4 3 N2466FTDA 14 13 11 10 12 7 8 30 40 16 39 38 42 41 43 9 34 15 36 35 29 46 Fig DM1 Top View 32 20 33 24 25 27 26 23 28 31 21 22 Bottom View Fig DM2 ...

Page 107: ...ll up Slide 1 2 A S 10 Fig DM4 3 6 6 L 2 Pin A Hole A Pin B Hole B L 1 First insert 6 diagonally in 3 as shown below Then install 6 in 3 while pushing L 1 in a direction of arrow After installing 6 in 3 confirm that pin A of 3 enters hole A of 6 properly Installation of 3 and 6 View for A 2 1 4 Install 6 in 4 while pulling L 2 in a direction of arrow After installing 6 in 4 confirm that pin B of 4...

Page 108: ...9 S 4 S 3 LDG Belt 8 Fig DM7 Pin of 12 Pin of 10 Groove of 28 View for A When reassembling 10 and 12 confirm that pin of 10 and pin of 12 are in the groove of 28 as shown 28 11 13 12 A 10 L 4 S 4A P 3 P 2 Removal of 11 1 Remove screw S 4A 2 Unhook spring P 2 3 Release L 4 while holding 12 with a finger 4 Loosen a finger holding 12 and remove 11 Fig DM8 1 ...

Page 109: ...er to Fig A Fig A 13 12 P 3 Fig B Top view Install pin of 12 in groove of 28 Refer to Fig B 28 Hold 12 and 13 till groove of pin of chassis looks and fit 13 in notch of chassis Then turn a few 13 while holding 12 Refer to Fig C Fig C Groove of pin of chassis Notch of chassis turn 13 12 Install 11 and 10 while holding 12 Refer to Fig DM8 1 Fig DM8 2 14 15 S 6 S 5 16 Fig DM9 18 17 19 S 7 L 5 P 4 Fig...

Page 110: ...hen installing 23 install the spring P 5 to 28 as shown in the left figure and then install 23 while pressing the spring P 5 to the direction of the arrow in the left figure and confirming that the position of the spring P 5 is placed as shown in the left figure Pin on bottom of 23 23 28 Pin on 22 Position of pin on 22 Top View Fig DM12 ...

Page 111: ...25 and 28 as shown Bottom View 28 25 28 Top View First tooth on 44 First groove on 28 Installation of 25 When reassembling 28 align the first groove on 28 to the first tooth on 44 as shown Fig DM13 2 Refer to the Alignment Section Page 2 5 1 30 29 L 11 P 6 32 33 31 Fig DM14 turn turn Break belt 35 38 39 40 36 P 8 P 7 turn 34 37 L 12 Fig DM15 ...

Page 112: ...2 4 9 N2466FTDA 43 41 42 L 13 Fig DM16 44 45 Slide P 9 Fig DM17 ...

Page 113: ... the mechanical or electrical parts Alignment points in Eject Position Alignment 1 Loading Arm SP and TU Assembly Install Loading Arm SP and TU Assembly so that their triangle marks point to each other as shown in Fig AL2 Alignment 2 Mode Gear Keeping the two triangles pointing at each other install the Loading Arm SP Assembly so that the last tooth of the gear meets the most inside teeth of the M...

Page 114: ...Blue grease SLIDUS OIL 150 B12 B492 B11 B571 B37 Some Ref Numbers are not in sequence B126 B8 B121 B426 B560 L1450 L1450 L1466 B501 Chassis Assembly Top View Lubricating Point Chassis Assembly Bottom View Lubricating Point B410 B74 L1051 B411 B494 B567 L1053 L1191 B73 B9 L1467 B2 B10 B35 B553 1 2 3 4 A B C ...

Page 115: ...Yellow grease B508 B414 View for A Grease point B516 B559 B52 B134 B133 B568 B565 B417 Some Ref Numbers are not in sequence Bottom Side Grease point B507 B488 B570 B491 B513 B502 Bottom Side Grease point L1151 B525 B592 B31 L1406 B148 B558 B557 B3 B522 B521 B520 B590 B564 B573 B574 B591 B416 A B487 B499 B587 B593 1 2 3 4 D E F ...

Page 116: ...3 Mark Description Floil G 684G or Multemp MH D Blue grease SLIDUS OIL 150 B563 B300 B562 B482 B355 B354 B483 B425 L1321 B347 L1321 B313 L1341 B303 B555 B514 Some Ref Numbers are not in sequence B361 B359 B529 B360 B561 L1474 1 2 3 4 G H I ...

Page 117: ...12 B488 9965 000 23420 MODE LEVER MK12 5 B491 9965 000 17199 CAM GEAR A MK12 B492 9965 000 16658 MODE GEAR MK12 B494 9965 000 16659 C DOOR OPENER MK12 B499 9965 000 16660 T LEVER HOLDER MK12 B501 9965 000 16661 WORM HOLDER MK12 B502 9965 000 17200 CAM GEAR B MK12 B507 9965 000 05342 REEL WASHER MK9 5 2 1 0 5 B513 9965 000 17201 CAM WASHER MK12 B514 9965 000 08641 SCREW RACK MK10 B516 9965 000 0534...

Search results

Summary of Contents for 20MC4304/17

Reviews:

Related manuals for 20MC4304/17

Brands by name

Popular brands

Magnavox 20MC4304/17, Service Manual

Search results

Summary of Contents for 20MC4304/17

Reviews:

Related manuals for 20MC4304/17

Brands by name

Popular brands